BRPI1006165B1 - internal batch mixer comprising mixing and display devices - Google Patents

Abstract

internal batch mixer comprising mixing and display devices an internal batch mixer is provided with a housing into which a material is mixed; a door that opens and closes a material discharge opening from the housing being rotated on its axis and closes the material discharge opening when in a closed state; and a closing mechanism which, when the material is mixed in the housing, keeps the door in a closed state, the closed state being a state in which the material discharge opening is being closed by the door and cannot be opened, and , when the material mixed in the housing is discharged from the interior housing, it releases the door from the closed state. the closing mechanism is provided with a linear actuator that has a movable section capable of moving linearly and moving the movable section to the side of the door to supply power to the closing element, the power causing the closing element to move until the door side, and a linear sensor to measure the distance of the linear movement of the moving section caused by the linear actuator. the information related to the displacement of the closing element is displayed on a display device based on the distance of the linear movement of the mobile section measured through the linear sensor.

Description

“INTERNAL BATTERY MIXER UNDERSTANDING DEVICES

OF MIXING AND DISPLAYING ”

TECHNICAL FIELD

The present invention relates to an internal batch mixer.

TECHNICAL FUNDAMENTALS

An example of a conventional internal batch mixer is disclosed in the following Patent Literature 1. In an internal batch mixer from Patent Literature 1, a mixing chamber is formed within a housing and mixing rotors are arranged inside the mixing chamber. The housing includes a discharge opening formed to extend in the axial direction of the mixing rotor and a discharge port provided to open and close the discharge opening. The discharge port prevents the flow of a material by blocking the discharge opening during mixing of the material inside the mixing chamber. When the material mixed in the mixing chamber is discharged, the discharge port is rotated and opened downwards.

This internal batch mixer also includes a closing device which is a locking mechanism for the discharge port. The closure device includes a closure and a hydraulic cylinder. The lock is installed to move forward and backward, in order to slide in relation to the discharge port. The discharge port is locked by compressing a contact surface of the closure onto a contact surface of the discharge port via the hydraulic cylinder, and the impermeability inside the mixing chamber is consequently maintained. When the lock is retracted, the discharge door can be opened.

In a conventional appliance described above, the repetitive opening and closing operation of the discharge door causes wear and tear in a contact area between the discharge door and the closure. For example, wear is caused by a door contact plate on the side of the door and on a stop of the lock latch on the side of the lock. Therefore, in the past, a state of wear for the contact parts (consumable parts) has been visually confirmed by sending a worker to a place where the closing device can be observed.

Conventional visual confirmation of the wear state for the contact parts was also carried out by installing a scale plate on a base part of the mixer, fixing a reference element for a piston rod of the hydraulic cylinder, and comparing a position of the reference element with a scale from the scale plate.

Consequently, confirmation of the wear status for a component or component replacement requires the scale reading operation or the scale plate position readjustment operation.

However, since the hydraulic cylinder is usually in a disPetition location 870190102602, from 10/11/2019, p. 12/56 of the work area of a mixer operator during the mixing operation, it is difficult for the operator to carry out the confirmation mentioned above during the mixing operation. In addition, since the scale plate is usually coated with a dust collection coating or the like, the confirmation operation or the readjustment operation is not easy to perform. The dust collection liner can be provided with a safety device switch. In this case, it is difficult to carry out the confirmation operation mentioned above during the operation of the mixer, since the mixer is turned off when the dust collection liner is opened during the operation.

Although the confirmation operation or readjustment operation mentioned above is possible from the point of view of the machine structure, the confirmation operation remains difficult, since the scale plate is contaminated in a work environment that needs collection of dust. Therefore, it is common to perform the confirmation operation mentioned above, although the operation of the mixer is interrupted.

Confirmation of the wear condition or confirmation of the scale plate or the like, may be delayed, depending on the operating cycle of the mixer. If the wear of the contact part is temporarily left, damage to the machine components, such as deformation of a thin part at the edge of the discharge opening, which is to contact the discharge port on the housing, is caused when the closing mechanism, for example, it is of the articulated lever type. When the locking mechanism is of the sliding type, too, wear is similarly caused in the contact area between the door and the lock. If the contact part replacement time is prolonged, the housing or similar, which are durable components, will also be damaged. In general, since it is difficult to perceive the state of wear continuously, with respect to such a contact part in the closing mechanism, its replacement time can hardly be predicted. In this way, neglecting the state of wear in the contact area causes damage to the machine components in the type of articulated lever and sliding type of the closing mechanisms.

As described above, in the closing device of the conventional internal batch mixer, it is difficult to perceive the wear state of the mutual contact parts of the door and the element lock, which are wear elements.

The following Patent Literature 2 discloses an internal batch mixer provided with a sealing mechanism. The sealing mechanism prevents leakage of the mixing material within a mixing chamber out of the mixing chamber from an area in the vicinity of an end portion of a mixing rotor within the mixing chamber.

This sealing mechanism includes a sealing element that prevents leakage of the mixing material out of the mixing chamber, being compressed at the end of the rotor in the axial direction of the rotor. The sealing element is composed of

Petition 870190102602, of 11/10/2019, p. 13/56 a side rotation sealing element fixed to an end surface of the rotor and a side fixing sealing element fixed to an end surface of a dust barrier ring through which the axis rotor is inserted. The side rotation sealing element and the side fixing sealing element are consumable elements that are worn through mutual sliding. In Patent Literature 2, one of these sealing elements is formed using a material consisting of a resin compound filled with graphite or short carbon fiber of no more than 1/2 inch in length of the fiber. This allows a reduced value of the friction coefficient of the sliding surfaces of the sealing elements to suppress heat generation or wear of the sealing elements that are consumable elements.

One of the techniques related to the sealing mechanism for the internal batch mixer is described in the following Patent Literature 3. In the technique described in Patent Literature 3, the generation of heat or wear of the sealing elements is suppressed by the rotation of a first glove having a frictional wear element fixed to an end surface thereof, which corresponds to the sealing element of lateral fixation mentioned above, in a direction of rotation of the rotor at a speed of rotation less than the speed of rotation of the rotor shaft, thereby reducing the mutual sliding speed of the sealing elements.

Another technique related to the sealing mechanism is also described in the following Patent Literature 4. In the technique described in Patent Literature 4, the internal pressure of the mixing chamber is measured, and the sealing pressure or tilting force from a sealing ring to a collar ring, is appropriately adjusted in response to the measured value of the pressure by means of adjustment having a hydraulic cylinder. When the mixing chamber is low in internal pressure at the end stage of the mixing process or the like, the service life of the sealing elements can be extended by reducing the sealing pressure.

Each of the techniques described in Patent Literature 2 to 4 is intended to extend the life of the sealing elements, which are consumable elements, by preventing wear of the sealing elements. However, these sealing elements are constantly consumable elements. Therefore, these sealing elements are gradually eroded, and reach the end of their useful lives at some stage. In other words, the sealing elements are elements that reach their application limits at some stage. On the other hand, the operator hardly confirms the sliding of the sealing parts of the sealing elements during the mixing operation of the mixer, since the position of the sealing elements is far from the operator's working area during the operation. In order to perceive the abrasion loss of the sealing elements, in addition, the operator must confirm a wear depth of a few mm. Furthermore, it is difficult

Petition 870190102602, of 11/10/2019, p. 14/56 confirm the abrasion loss of the sealing elements based on a machined part around the sealing elements, since the machined parts are smaller around the sealing elements in the mixer. Even though the abrasion loss of the sealing part is measured based on the machined part, it is substantially impossible to carry out this measurement during the mixing operation. For these reasons, it often happens that a countermeasure, such as replacement of the sealing element, is taken, once after the dust from the mixing material begins to leak through the sealing part.

When dust from the mixing material begins to leak through the sealing part, the rupture of the piping or a temperature sensor in the vicinity of the poured mixing material is also feared, in addition to damage to the counter elements of the mutually sliding sliding surfaces. Breakage of the piping or temperature sensor results in further serious damage. In addition, the pouring of the mixing material requires disposal of the poured mixing material. A high leakage rate of the mixing material leads to deterioration of the work efficiency, due to the need to clean the periphery of the mixer.

As described above, a technique for perceiving the wear level of a sealing element, which is a wear element in the conventional sealing mechanism for the internal batch mixer, was required.

Citation List

Patent Literature

Patent Literature 1: Japanese Patent Application Open to Public No. 9-220456

Patent Literature 2: Japanese Patent No. 3620944

Patent Literature 3: Japanese Patent Application Open to Public No. 10,151,333

Patent Literature 4: Japanese Utility Model Application Public Open No. 6-32010

SUMMARY OF THE INVENTION

An object of the present invention is to provide an internal batch mixer capable of solving the problems mentioned above.

The other objective of the present invention is to provide an internal batch mixer, which facilitates the perception of the wear level of a wear element (consumable element), even during the operation of the internal batch mixer.

An internal batch mixer, in accordance with an aspect of the present invention, includes: a mixing device for mixing material; and a display device provided outside the mixing device, wherein the mixing device includes: a housing, in which the material is mixed and which has a material discharge opening formed to discharge the mixed material; a door that opens and closes the opening of

Petition 870190102602, of 11/10/2019, p. 15/56 material discharge through rotation around an axis and blocks the material discharge opening when it is in a closed state; and a closing mechanism that maintains, during mixing of the material inside the housing, the door in a closed state, the closed state being a state in which the closing mechanism compresses the door to the housing, so that the door locks the door. material discharge opening and cannot be opened, and which releases the closed state, discharging the mixed material inside the housing outside the housing, the closing mechanism includes: a closing element provided to contact the door; a linear actuator that has a linearly moving part and provides power to the closing element to direct the closing element to the side of the door by moving the moving part towards the door; and a linear sensor that measures the distance of the linear movement of the moving part through the linear actuator, and the display device displays displacement information of the closing element based on the distance of the linear movement of the moving part measured by the linear sensor.

An internal batch mixer, according to the other aspect of the present invention, includes: a mixing device for mixing material; and a display device provided outside the mixing device, wherein the mixing device includes: a housing having a mixing chamber inside it; a rotor inserted in the mixing chamber; a rotor shaft provided to project from an end surface of the rotor which is an end surface in the axial direction of the rotor; and a dust barrier device to prevent material leakage inside the mixing chamber to the outside, and the dust barrier device includes: a side rotation sealing element fixed to the end surface of the rotor to be fully rotated with the rotor; a lateral ring-type sealing element through which the rotor shaft is rotatably inserted; and a pressure-force transmitting mechanism that tilts the side fixing sealing element towards the rotor end surface, so that the side fixing sealing element is in pressure contact with the side rotation sealing element, and the pressure force transmitting mechanism includes: a linear actuator that has a movable part provided to be movable in the axial direction of the rotor, and tilts the side fastening sealing element towards the end surface of the rotor by moving the part movable towards the end surface of the rotor; and a linear sensor attached to the linear actuator to detect the displacement of the moving part in the axial direction of the rotor, and the display device displays displacement information of the lateral fastening seal element based on a detection value through the linear sensor in a state where the lateral fastening sealing element is in pressure contact with the lateral rotation sealing element by the pressure force transmitting mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

Petition 870190102602, of 11/10/2019, p. 16/56

Fig. 1 is a schematic front view showing an overall structure of an internal batch mixer, according to a first embodiment of the present invention;

Fig. 2 is an enlarged schematic view of section B in Fig. 1;

Fig. 3 is a schematic perspective view to illustrate the principle of operation of a linear sensor;

Fig. 4 is a schematic view showing a first display mode on a display device;

Fig. 5 is a schematic view showing the first display mode on the display device;

Fig. 6 is a schematic view showing the first display mode on the display device;

Fig. 7 is a schematic view showing a second display on the display device;

Fig. 8 is a schematic view showing the second display on the display device;

Fig. 9 is a schematic view showing the second display on the display device;

Fig. 10 is a schematic front view showing an overall structure of an internal batch mixer, according to a second embodiment of the present invention;

Fig. 11 is an enlarged schematic view of section C in Fig. 10;

Fig. 12 is a front view of part of the dust barrier device in an internal batch mixer, according to a third embodiment of the present invention;

Fig. 13 is a sectional view taken along XIII-XIII of Fig. 12;

Fig. 14 is a detailed view of section J in Fig. 13; and

Fig. 15 is a sectional view of the internal batch mixer, according to the third embodiment of the present invention.

MODE FOR CARRYING OUT THE INVENTION

First Mode

In the following, a first embodiment of the present invention will be described with reference to Figs. 1 to 9.

Global Structure

First, an overall structure of an internal batch mixer 1, according to the first embodiment of the invention, will be described with reference to Fig. 1.

The internal batch mixer 1 includes: a mixing device 1a for mixing 870190102602, from 10/11/2019, p. Rare material; a display device 5 for displaying displacement information of a locking element 41 and alarm (warning information) which will be described later; and a storage device 6 for storing an adjustment value which will be described later.

The mixing device 1a includes a housing 2, two rotors 2r, a discharge port 3, a locking mechanism 4 and a support base 7. The internal batch mixer 1, according to this embodiment, is a batch mixer two-axis and is used, for example, to mix raw rubber material.

The material to be mixed is supplied in the housing 2 through a material feed opening 2j, which is formed in an upper part of the housing 2, by a floating weight (not shown) provided inside a feed tank (not shown), so as to be able to rise and fall. The two rotors 2r formed of a metallic material are arranged inside the housing 2. The two rotors 2r are mixing rotors, which are rotated in mutually different directions by receiving power from an engine not shown (refer to the directions of the arrows in Fig. 1). The material is mixed inside the housing 2 through this rotation of the two rotors 2r.

The mixed material is discharged through a material discharge opening 2h formed in a lower part of the housing 2. When the material is discharged, the material discharge opening 2h is opened by the discharge port 3 by turning downstream to a position of discharge shown by the dashed line in Fig. 1, through which the material can be discharged out of the housing 2.

During the mixing operation, the discharge door 3 is placed in a closed state by the function of the closing mechanism 4. In the closed state, the discharge door 3 blocks the material discharge opening 2h and cannot be opened. When the material is discharged, the closing mechanism releases the closed state, whereby the discharge door 3 is opened.

The internal batch mixer 1 of this modality is configured, so that the display of displacement information of the closing element 41 (to be described later) and the alarm display can be performed by the display device 5. Then, each component will be described in detail.

Carcass

The housing 2, which is a body part of the internal batch mixer 1, is composed of a metallic material. The housing 2 is supported by the support base 7 made of metal. Two mixing chambers 2s are formed inside the housing 2. Each of the mixing chambers 2s is formed in a substantially columnar shape, and laterally juxtaposed, as shown in Fig. 1, extending in parallel with each other. Each rotor 2r is arranged inside each mixing chamber 2s, so as to extend in the same direction

Petition 870190102602, of 11/10/2019, p. 18/56 of the mixing chamber 2s. As described above, the material feed opening 2j for supplying the material to be mixed is formed in an upper part of the housing 2. The material discharge opening 2h for unloading the material that has been mixed is formed in a lower part of the housing. 2. The material discharge opening 2h is formed to extend along the axial direction of the rotor 2r. In frame 2, the material feed opening 2j, the two mixing chambers 2s and the material discharge opening 2h communicate.

Unloading Port

The discharge port 3 is formed of a metallic material and functions as a cover element to block the material discharge opening 2h from the housing 2. This discharge port 3 falls within the concept of the door in the present invention. The discharge port 3 is provided to be rotatable about a rotary axis 3s. Concretely, the rotary axis 3s is fixed to the discharge port 3. The rotary axis 3s is supported by the support base 7 in a rotating state. The axial direction of the rotary axis 3s is parallel to the axial direction of the rotor 2r. The discharge door 3 opens and closes the material discharge opening 2h by rotating around the rotary axis 3s and blocks the material discharge opening 2h when it is in a closed state. The rotary axis 3s falls under the axis concept in the present invention.

The discharge port 3 includes a tip section 3v and a projected part 3t. The 3v tip section is provided to project into the housing 2 in a state where the discharge port 3 blocks the material discharge opening 2h. The tip section 3v is formed to extend along the axial direction of the rotor 2r. In a closed state of the discharge port 3 or in a state where the discharge port 3 blocks the material discharge opening 2h, the tip section 3v enters the material discharge opening 2h. In this state, two surfaces 3r facing the two rotors 2r of the tip section 3v, or the surfaces 3r on both sides of the tip section 3v in Fig. 1 constitute the wall surface of the two mixing chambers 2s together with the inner surface frame 2.

In the discharge port 3, two contact surfaces 3w are formed below the two surfaces 3r. The two contact surfaces 3w contact the inner wall surface of the material discharge opening 2h in the closed state of the discharge port 3.

The projected part 3t is a part for contacting a contact part 41s (locking element 41) provided on a piston rod 41b which will be described later. This projected part 3t is formed to project towards the contact part 41s in the closed state of the discharge port 3.

The projected part 3t includes, as shown in Figs. 1 and 2, a metal contact plate 3b. The contact plate 3b of the projected part 3t contacts the contact part 41s. The contact plate 3b is arranged at the end of the projected part 3t or at a part closer to it. 870190102602, from 10/11/2019, p. 19/56 ma to the 41s contact part of the projected part 3t. The surface of the contact plate 3b is formed in a curved shape, concretely, as a part of a spherical surface.

The contact plate 3b is fixed to the body of the projected part 3t using a screw not shown. That is, the contact plate 3b is fixable and removable. The contact plate 3b can be made of synthetic resin. Otherwise, the contact plate 3b can be removed.

Closing Mechanism

A closing mechanism 4 maintains, during the mixing operation, the discharge port 3 in a closed state, that is, a state in which the closing element 41 compresses the discharge port 3 in the housing 2, so that the door discharge 3 blocks the material discharge opening 2h and cannot be opened. On the other hand, the closing mechanism 4 releases the closed state of the discharge port 3 when the mixed material inside the housing 2 is discharged outside the housing 2.

The closing mechanism 4 includes the closing element 41, a hydraulic cylinder 42 and a linear sensor 43. The hydraulic cylinder 42 falls within the concept of the linear actuator in the present invention. This hydraulic cylinder 42 includes a piston rod 41b, a piston 41p and a cylindrical body 45. The piston rod 41b is inserted into the cylindrical body 45. The piston 41p is fitted within the cylindrical body 45.

The cylindrical body 45 acts as a support for the total hydraulic cylinder 42 and also guides piston 41p and piston rod 41b along its axial direction. The cylindrical body 45 is attached to a base 4B. The base 4B is integrally formed with the support base 7. That is, the hydraulic cylinder 42 is fixed, so as not to move in relation to the position of the housing 2. The hydraulic cylinder 42 and the support base 7 need only be fitted on the same base, and the base 4B and the support base 7 can be composed of different separate elements.

The piston rod 41b is a bar-type member. The piston 41p is attached to the piston rod 41b within the cylindrical body 45. The piston 41p and piston rod 41b fall in the concept of the moving part in the present invention. The piston 41p is formed in an annular shape, and is fixed, while it is adjusted on the piston rod 41b. Piston 41p and piston rod 41b are mutually fixable and removable. Piston rod 41b and piston 41p can be formed as an integrated unit.

The closing element 41 is provided to be contacted with the contact plate 3b of the discharge port 3. In this embodiment, the closing element 41 corresponds to a tip section of the piston rod 41b, or the contact part 41s integrally supplied. at an end close to the discharge port 3 of the piston rod 41b (refer to Figs. 1 and 2). The contact part 41s is designed in a tapered shape along the axial direction of the piston rod 41b. In the 41s contact part, the diameter of a vertical section in the axial direction D is reduced towards the end near the discharge port 3. The surface

Petition 870190102602, of 11/10/2019, p. 20/56 side of the contact part 41s is formed in a conical shape and the tip surface of the contact part 41s is formed as a curved surface forming a part of a spherical surface. An inclined part 41z is formed on the upper surface of the contact part 41s. The inclined part 41z is inclined, so that the distance from a central line along the axial direction D (refer to the dashed line J in Fig. 2) is reduced towards the tip surface of the contact part 41s .

The piston rod 41h is a replacement part. If the contact part 41s is worn through contact with the contact plate 3b, only the piston rod 41b can be replaced with a new part. The closing element can be an element supplied separately from the linear actuator as in a second embodiment that will be described later.

The hydraulic cylinder 42 supplies power to the contact part 41s to direct the contact part 41s to the discharge port 3 through the movement of piston 41b and piston rod 41b towards the discharge port 3 using hydraulic pressure. Concretely, a hydraulic circuit not shown is connected to the hydraulic cylinder 42. Hydraulic oil is supplied from the hydraulic circuit to the hydraulic chambers formed on both sides of the piston 41b inside the hydraulic cylinder 42. When the discharge port 3 is placed in the state closed by moving the closing element 41 (contact part 41s) towards the discharge port 3, the hydraulic oil is supplied to the hydraulic chamber (head side chamber) on the left side of piston 41p in Fig. 1. When the closed state is released, hydraulic oil is supplied to the hydraulic chamber (stem-side chamber) on the right side of piston 41p in Fig. 1. The piston rod 41b and piston 41p are alternated along the axial direction of the rod piston 41b (the direction of arrow D in Fig. 1). That is, piston rod 41b and piston 41b move linearly in the approach and separation directions in relation to the discharge port 3.

A permanent magnet 41m is attached to one end on the inner side of the hydraulic cylinder 42 of the piston rod 41b or to an end located opposite the discharge port 3 of the piston rod 41b. The permanent magnet 41m may not be attached to piston rod 41b, but to piston 41p.

A magnetostrictive wire (sensor probe) 44 is disposed within the hydraulic cylinder 42. The magnetostrictive wire 44 is fixed in relation to the cylindrical body 45 of the hydraulic cylinder 42. The magnetostrictive wire 44 extends along the axial direction D of the piston rod 41b . A guide hole is formed in the center of piston rod 41b to extend along axial direction D. Magnetostrictive wire 44 is inserted into this guide hole. The course of operation of piston rod 41b is carried out in this state. That is, the position of the permanent magnet 41m is modified in relation to the magnetostrictive wire fixed 44 during the stroke of the piston 41b of the hydraulic cylinder 42. The magnetostrictive wire 44 is a metallic wire composed of

Petition 870190102602, of 11/10/2019, p. 21/56 nickel alloy. Like the magnetostrictive wire material, any metallic material (ferromagnetic material) that can develop the Wiedemann effect can be adopted. For example, the magnetostrictive wire 44 may be composed of an alloy containing iron, cobalt, gadolinium or the like.

The linear sensor 43 measures the distance of the linear movement of the piston rod 41b through the hydraulic cylinder 42, in other words, the distance of the linear movement along the axial direction D of the piston rod 41b. The distance of the linear movement of the piston rod 41b with the discharge port 3 being in the closed state or a maximum value of the distance of the linear movement of the piston rod 41b corresponds to the stroke of the hydraulic cylinder 42. This stroke of the hydraulic cylinder 42 is the movement distance of piston 41b from one end to the other end of the cylindrical body 45 in the closed state of the discharge port 3. In other words, the 'stroke' of the hydraulic cylinder 42 is, when explained with Fig. 1, the movement distance of piston rod 41b from the left end (one end) to the right end (the other end: the position in the closed state).

The linear sensor 43 is electrically connected to the magnetostrictive wire 44. The linear sensor 43 is integrally attached to one end of the head side of the hydraulic cylinder 42 or to an end opposite the discharge port 3 of the cylindrical body 45 of the hydraulic cylinder 42. A integral attachment of the linear sensor 43 to the cylindrical body 45 of the hydraulic cylinder 42 eliminates the risk of displacement of the linear sensor 43 during the operation of the mixer.

Then, the measurement principle mentioned above the distance of the linear movement through the linear sensor 43 will be described with reference to Fig. 3.

Current (current pulse) is released through magnetostrictive wire 44. This current flows in the direction of arrow A from the starting end side of magnetostrictive wire 44 (linear sensor side 43). At this time, a magnetic field is produced in the magnetostrictive wire 44 along the circumferential direction.

The permanent magnet 41m of the piston rod 41b has a position relationship with the magnetostrictive wire 44, as shown in Fig. 3. In the vicinity of the permanent magnet 41m, a magnetic field is produced along the axial direction D. When the permanent magnet 41m approaches magnetostrictive wire 44, an oblique magnetic field, as shown by the dotted line, is produced, around a position close to the permanent magnet 41m of magnetostrictive wire 44, through the composition of the magnetic field along the circumferential direction and the magnetic field along the axial direction D. This oblique magnetic field causes torsion deformation in a part close to the permanent magnet 41m of the magnetostrictive wire 44. This phenomenon is called the Wiedemann effect. The torsion deformation mentioned above spreads over the magnetostrictive wire 44

Petition 870190102602, of 11/10/2019, p. 22/56 composed of metal as ultrasonic oscillation or sonic signal. The linear sensor 43 specifies the position of the permanent magnet 41m by measuring the propagation time of this ultrasonic wave or sonic wave.

An output signal from linear sensor 43 or a signal showing a position of the permanent magnet 41m is sent to a counter (not shown) via an A / D converter (not shown). This signal is processed by the counter, by means of which a numerical value representing the distance of the linear movement of the piston 41p in the hydraulic cylinder 42 is derived. The output current from linear sensor 43 is 4 to 20 mA. Linear sensor 43 can be connected to a programmable controller, microprocessor, etc. through the A / D converter. In this case, piston rod 41b can be decelerated and stopped in an optional position.

Display Device

The display device 5, which is a liquid crystal display, is provided in a control panel (not shown) arranged in a position close to and outside the mixing device 1a. The display device 5 includes a display 5d which is a display screen. Various parts of the information are displayed on this 5d display.

The display device 5 displays a variation in the stroke of the hydraulic cylinder 42 as displacement information of the closing element 41, as shown in Figs. 4 to 9, based on the distance of the linear movement measured through the linear sensor 43. The display device 5 also functions as an alarm device, as described later. The display device and the alarm device can be constituted as different devices.

The display device 5 includes a central processing unit (CPU) 5s. The central processing unit 5s has a controller and an arithmetic device, and is electrically connected to the storage device 6 and the linear sensor 43. The central processing unit 5s performs arithmetic processing to compare displacement information of the closure element 41 with an adjustment value stored in the storage device 6. Concretely, the central processing unit 5s performs arithmetic processing to compare a measured value via linear sensor 43 in a state where the discharge port 3 is kept in the closed state by closing mechanism 4 or the stroke of the hydraulic cylinder 42, with the adjustment value stored in the storage device 6. The central processing unit 5s performs the control processing to instruct the display 5d to perform an alarm display when the value of measurement via linear sensor 43 reaches the setpoint.

Storage Device

Storage device 6, which is a RAM (Random Access Memory), is provided within the control panel mentioned above. The storage device

Petition 870190102602, of 11/10/2019, p. 23/56 preliminarily stores a plurality of adjustment values with respect to the displacement information of the closing element 41. The "adjustment value" means a value that is adjusted as a value corresponding to the stroke of the hydraulic cylinder 42 or the maximum value of the distance of the linear movement of the piston rod 41b, and is used as a reference value for the alarm display that will be described later.

The storage device 6 is configured, so that a plurality of stages of the setpoint can be adjusted. That is, the storage device 6 can store a plurality of stroke values as the setpoint. With respect to sending the setpoint to the storage device 6, the operator can send an optional setpoint using the keypad provided on the control panel, or a setpoint recommended by the manufacturer can be preliminarily stored on the storage device. storage 6. Storage device 6 can store only one setpoint.

The storage device 6 still stores the wear-condition monitoring software. This software (program) causes the internal batch mixer 1 to perform a measurement step, a display step and an alarm step.

Closed State

Then, the closed state will be described. The closed state means a state in which the discharge door 3 is locked by the closing mechanism 4, so as not to be opened, blocking the material discharge opening 2h from the housing 2.

The piston rod 41b is initially housed within the cylindrical body 45 and is located closest to the left end within the cylindrical body 45, and the contact part 41s is not projected out of the cylindrical body 45. In this state, the discharge port 3 can rotate freely around the 3s rotary axis without contacting the 41s contact part.

When the discharge port 3 is rotated upwards from a discharge position to insert the tip section 3v into the material discharge opening 2h, the discharge port 3 is placed in a closed state and the material discharge opening 2 am is blocked by the discharge port 3.

The closing mechanism 4 is operated with the discharge door 3 being closed, whereby the discharge door 3 is kept in the closed state. Concretely, the hydraulic pressure on the side of the head chamber acts on the piston 41p of the hydraulic cylinder 42 at this moment, by means of which the force directed to the discharge port 3 (the direction of the arrow D1 in Fig. 2) is supplied to the piston 41p and piston rod 41b. Along with this, the force directed to the discharge port 3 is also supplied to the contact part 41s. The inclined part 41z provided above the contact part 41s contacts the contact plate 3b of the discharge port 3, as shown in Figs. 1 and 2. In this state, the force directed at

Petition 870190102602, of 11/10/2019, p. 24/56 discharge port 3 of contact part 41s acts on contact plate 3b.

The 41s contact part advances to the bottom side of the contact plate 3b. At this point, the force in an upward direction (the direction of the arrow G in Fig. 2) is provided from the inclined part 41z of the contact part 41s to the projected part 3t of the discharge port 3. As a result, two surfaces of contact 3w of the discharge port 3 are compressed on the inner wall surface of the material discharge opening 2h (refer to Fig. 1). The discharge port 3 is held up by the contact part 41s, so as not to be opened.

As described above, in the closed state, the discharge door 3 is closed by the closing mechanism 4 and the discharge door 3 is locked, so as not to be opened, blocking the material discharge opening 2h, whereby the The air tightness of the 2s mixing chamber is maintained.

In this embodiment, the contact plate 3b is provided on the discharge port part 3, which contacts the contact part 41s, as described above. Contact plate 3b and piston rod 41b provided with contact part 41s are consumable parts and also replacement parts. That is, the contact plate 3b and the contact part 41s contact and wear out with repeated opening and closing operations of the discharge port 3. In other words, the contact plate 3b and the piston rod 41b provided with the part 41s contact elements are wear elements.

Alarm Display

Display device 5 also functions as an alarm device that provides an alarm. Next, the display of displacement information of the closing element 41 and the alarm display via the display device 5 will be described. The storage device 6 stores two adjustment values as a reference value for the stroke of the hydraulic cylinder 42 or for the maximum value of the distance of the linear movement of the piston rod 41b. Specifically, the adjustment values are adjusted for two stages of “52.0 mm” (adjustment value A) and “53.0 mm” (adjustment value B). These two stages of setting values are determined in relation to a linear sensor 43.

Setpoint A is a reference value for the wear element replacement time, which is recommended by the manufacturer. The wear element is replaced when the stroke value of the hydraulic cylinder 42 reaches the setpoint A, by means of which the internal batch mixer 1 can still be safely operated. Setpoint B is a reference value representing an application limit for the wear element. If the operation of the internal batch mixer 1 is interrupted when the stroke value of the hydraulic cylinder 42 reaches setpoint B, serious damage to the internal batch mixer 1 can be prevented. The adjustment value and method for the adjustment value are not limited to those described above.

Petition 870190102602, of 11/10/2019, p. 25/56

For example, if the stroke of the hydraulic cylinder 42 is 50 mm before wear occurs on a wear element, or when using a new wear element, the stroke variation is a change in the stroke of the hydraulic cylinder 42 from of its numerical value. The display device 5 can display the stroke variation (closure element displacement information 41) in a plurality of display modes shown below. The display of the stroke variation by the display device 5 can be modified by operating on the control panel.

In a first display mode, the display device 5 displays numerically, as shown in Fig. 4, a current stroke variation on the display 5d. The indication of “1.0 mm” in the display 5d shows that the variation in relation to the initial stroke before the wear element is worn is +1.0 mm. That is, in this state, the stroke of the hydraulic cylinder 42 is increased by 1.0 mm by the abrasion between the contact plate 3b and the contact part 41s, which are contact parts, or the stroke is 51.0 mm. The stroke does not reach the setpoint in this state.

When the stroke variation reaches +2.0 mm, or when the stroke reaches 52.0 mm (setting value A), the background color of the display 5d is changed to a darker color, as shown in Fig. 5. In other words, the background color of the display 5d is modified in order to reduce glare. This change in the background color of the 5d display is a preliminary alarm.

When the stroke variation reaches +3.0 mm, or when the stroke reaches 53.0 mm (setting value B), the background color of the display 5d is changed to an even darker color, as shown in Fig. 6 This change in the background color of the 5d display is a second alarm stage.

As described above, the display device 5 modifies the background color of the display 5d between three stages for each stroke variation (unit: mm) of the following three bands (i), (ii) and (iii).

(i) 0.0 to +1.9 (ii) +2.0 to +2.9 (iii) +3.0 or more

In this first display mode, “the change in the background color of the display 5d from the state of Fig. 4, when the measured value through the linear sensor 43 in the closed state reaches the setting value”, corresponds to an alarm ( alarm display). That is, in this display mode, the alarm is displayed on the display device 5. In this display mode, also, the change in the display mode of the displacement information of the closing element 41 on the display device 5 functions as the alarm.

Then, a second view is described. In this second display mode, the stroke variation is displayed graphically. Specifically, the stroke variation is shown by the bar graph and the area of a colored section 5c showing the

Petition 870190102602, of 11/10/2019, p. 26/56 stroke is increased, as the stroke variation value is increased, as shown in Figs. 7, 8 and 9. At an initial point of time, before wear occurs on the wear element, or when the stroke variation is 0, the interior of a frame 5f is not colored. The area of the colored section 5c increases within the frame 5f shown on the display 5d. The fully colored frame 5f shows that the stroke has reached the setpoint B. As the area of the colored section 5c is increased, the area of a non-colored section 5t inside the frame 5f is decreased.

Fig. 7 shows a screen of the 5d display when the stroke variation is +1.0 mm, or when the stroke is 51.0 mm. In this state, the stroke variation is shown as the colored section 5c by the bar graph on the display 5d.

When the stroke variation reaches +2.0 mm, or when the stroke reaches 52.0 mm (setting value A), the position of the right end of the colored section 5c reaches a position that indicates 2.0 mm. In this state, the color of colored section 5c is changed to a darker color, as shown in Fig. 8. In other words, the color of colored section 5c is modified in order to reduce glare. This change in color of colored section 5c is a preliminary alarm.

When the stroke variation reaches +3.0 mm, or when the stroke reaches 53.0 mm (setting value B), the color of the colored section 5c is changed to an even darker color, as shown in Fig. 9. This change in color in colored section 5c is a second alarm stage. In this state, the interior of frame 5f is entirely composed of colored section 5c.

Also in this second display mode, "the change in color of colored section 5c from the state of Fig. 7, when the measured value via linear sensor 43 in the closed state reaches the setting value", corresponds to the alarm (display alarm). That is, also in this display mode, the alarm is displayed on the display device 5. Furthermore, also in this display mode, the change in the display mode of the displacement information of the closing element 41 on the display device 5 functions as the alarm.

In this mode, the value corresponding to the stroke of the hydraulic cylinder 42 in the closed state is adopted as the setpoint to be stored in the storage device 6, and the display device 5 compares the setpoint with the measured value via the sensor. linear 43 in the closed state. Without being limited to such form, however, a value corresponding to the stroke variation of the hydraulic cylinder 42 in the closed state or an indicated value of the display device 5, for example, can be adopted as the adjustment value to be stored in the control device. storage 6, and the display device 5 can compare this setpoint with a stroke variation obtained from the measured value using linear sensor 43. In this case, the displacement information of element 870190102602, of 11/10/2019 , p. 27/56 to closing 41 is the stroke variation. When explained with the example mentioned above, adjustment value A is "2.0 mm" and adjustment value B is "3.0 mm". The display device compares this adjustment value with the “stroke variation” which is the indicated value.

Monitoring Method

The method of monitoring the internal batch mixer, according to this modality, will be described.

The discharge opening of material 2h is blocked with the discharge door 3 by closing the discharge door 3 (door closing step). The closing mechanism 4 is operated, so that the contact part 41s supports the contact plate 3b upwards, whereby the reduction of the discharge port 3 is restricted, and the discharge port 3 is placed in the closed state , in which the discharge door 3 cannot be opened (closing step).

The distance of the linear movement of the piston rod 41b by the hydraulic cylinder 42 is measured using the linear sensor 43 (measuring step). This step is constantly repeated during the operation of the internal batch mixer 1. The measurement step does not have to be carried out constantly. That is, the measurement step can be performed only when necessary.

Then, the stroke variation of the hydraulic cylinder 42 as the displacement information of the closing element 41 is displayed on the display device 5 based on the distance of the linear movement of the piston rod 41b measured through the linear sensor 43 (display step ). The display step is performed for each execution of the measurement step in a state where the discharge port 3 is kept in the closed state. Therefore, a current value of the stroke variation is constantly displayed on the display device 5 during the operation of the internal batch mixer 1. The display step can be carried out only when necessary.

The display device 5 compares the measurement value of the distance of the linear movement of piston rod 41b in the closed state with the adjustment value (adjustment values A and B), and performs the alarm display when the measured value reaches the setting value (alarm step). This alarm step that performs the comparison of the measured value with the set value and the alarm display is constantly repeated during the operation of the internal batch mixer 1.

In the internal batch mixer 1 described above, the stroke of the hydraulic cylinder 42 can be confirmed from an electrical signal output from the linear sensor 43. The operator can perceive a wear state for the wear element by observing the display device 5, operating the internal batch mixer 1 to perform the material mixing operation. The operator can interrupt the operation of the internal batch mixer 1, as needed, by monitoring the

Petition 870190102602, of 11/10/2019, p. 28/56 display device 5. The operation of the internal batch mixer can be automatically interrupted when the measured value via linear sensor 43 reaches setpoint A or setpoint B.

It is made

The effects obtained by the internal batch mixer 1, according to this modality, and the method of monitoring them will be described.

(1) The internal batch mixer 1 includes the mixing device 1a for mixing material and the display device 5 provided outside the mixing device 1a. The mixing device 1a includes: the housing 2 into which the material is mixed and which has the material discharge opening 2h to discharge the material that has been mixed; the discharge door 3 which opens and closes the material discharge opening 2h by rotating around the rotary axis 3s and blocks the material discharge opening 2h when it is in a closed state; and the closing mechanism 4 that keeps, during the mixing of the material inside the housing 2, the discharge door 3 in a closed state, which is a state such as the closing mechanism 4 compresses the discharge door 3 in the housing 2, so that the discharge door 3 blocks the material discharge opening 2h and cannot be opened, and releases the closed state when it discharges the mixed material inside the housing 2 out of the housing 2. The closing mechanism 4 includes the cylinder hydraulic 42 which includes the contact part 41s (locking element 41) provided to be contacted with the discharge port 3; and piston 41p and piston rod 41b which are linearly mobile, the hydraulic cylinder providing power to the contact part 41s to direct the contact part 41s next to the discharge port 3 through the movement of piston 41p and piston rod 41b towards the discharge port 3; and the linear sensor 43 that measures the distance of the linear movement of the piston rod 41b by the hydraulic cylinder 42, and the display device 5 displays, based on a measurement value of the distance of the linear movement of the piston rod 41b measured through the linear sensor 43, a stroke variation as displacement information of the closing element 41.

In this structure, the display device 5 provided on the outside of the mixing device 1a can display displacement information of the closing element 41 which is a position or variation in the position of the closing element 41 (contact part 41s) based on the value of measuring the distance of the linear movement of the piston rod 41b through the linear sensor 43. In this embodiment, the display device 5 outside the mixing device 1a can display information about the stroke of the hydraulic cylinder 42, that is, the stroke or variation in the stroke of the hydraulic cylinder 42. Therefore, the operator can easily perceive information on the wear status of the contact parts of the discharge port 3 and the closing element 41, or of the contact plate 3b and the contact part 41s, through observing the displacement information of the closing element 41 during the operation of the

Petition 870190102602, of 11/10/2019, p. 29/56 mixer. Since the operator can confirm the wear state of the contact parts during the operation of the mixer, he / she can know the time for replacing the wear element. The operator can also prevent the deformation of an edge part of the frame 2 that forms the material discharge opening 2h, the deformation being caused by the continuous use of an element beyond its application limit, by monitoring the wear state of the contact parts.

(2) The internal batch mixer 1 also includes the storage device 6, which stores a plurality of adjustment values (adjustment value A and adjustment value B) with respect to the displacement information of the closing element 41, and the display device 5, which compares a measured value of the distance of the linear movement of piston rod 41b in the closed state with each setpoint, and provides an alarm when the measured value in the closed state reaches the setpoint.

In this structure, since the alarm is provided when the measured value of the distance of the linear movement in the closed state as displacement information of the closing element based on the measured value through the linear sensor 43 reaches an optional adjustment value stored in the device of storage 6, or a reference value for the replacement time or application limit of the wear element, the wear state of the wear element can still be safely perceived.

(3) In the internal batch mixer 1, in addition, the storage device 6 is configured, so that at least two stages of the setpoint can be stored for a linear sensor 43. In this structure, two or more setpoints they are determined as a reference value corresponding to the measured value using linear sensor 43, by means of which the wear state of the wear element can be gradually monitored. Concretely, in this embodiment, the display device 5 can provide a preliminary alarm to announce the occurrence of the wear element replacement time and also an alarm to announce the occurrence of the wear limit (application limit) of the wear element. Consequently, since the continuous use of a wear element can be prevented, a force can be prevented from acting on the narrow part on the opening edge of the material discharge opening 2h beyond its durability limit. As a result, the machine's components can be protected. In addition, setting a preparation period for wear elements that are consumable parts, work planning for replacing wear elements or the like can be effectively accomplished.

(4) In the internal batch mixer 1, the display device 5 functions as an alarm device and the display device 5 has the function of displaying the alarm. According to this structure, since the alarm is displayed on the display device 5 that displays the displacement information of the closing element, the operator can confirm visualization.

Petition 870190102602, of 11/10/2019, p. 30/56 the displacement information of the closing element and the alarm. Therefore, the operator can easily perceive the wear state of the wear element and check whether the wear state is at the level of the replacement time or application limit of the wear element.

(5) In the internal batch mixer 1, the display device 5 performs the alarm display by modifying the display mode of the displacement information of the closing element 41. Since the operator can simultaneously confirm the displacement information visually of the closing element and the alarm in this structure, the perception of the wear state of the wear element and the verification if the wear state is at the level of the replacement time or application limit of the wear elements can be easily and simultaneously performed.

(6) The method of monitoring the internal batch mixer 1, according to this modality, is a method for monitoring the internal batch mixer 1 provided with the frame 2 having the material discharge opening 2h to discharge the mixed material, discharge door 3 which is open and closed pivoting around the pivoting shaft 3s to block the material discharge opening 2h and the closing mechanism which, in mixing operation, places the discharge door 3 in a closed state, wherein the closing mechanism compresses the discharge port 3 to the housing 2, so that the discharge port 3 cannot be opened, and releases the closed state, discharging the mixed material. The locking mechanism 4 includes the contact part 41s (locking element 41), which contacts the discharge port 3, and the hydraulic cylinder 42, which supplies power to the contact part 41s to direct the contact part 41s to the side. discharge port 3. This monitoring method includes: a measurement step that causes linear sensor 43 to measure the distance of the linear movement of piston rod 41b by hydraulic cylinder 42; and a display step which, based on a measurement value of the distance of the linear movement through the linear sensor 43, a display device 5 provided outside the mixing device 1a displays a stroke variation of the hydraulic cylinder 42 as displacement information of the closing element 41.

In this structure, the information about the stroke of the hydraulic cylinder 42 as the displacement information of the closing element 41 is displayed on the display device 5 provided outside the mixing device 1a, based on the measured value of the distance of the linear movement of the piston rod 41b through linear sensor 43. Therefore, the operator can easily perceive a state of wear for the contact parts of the discharge port 3 and the closing element 41 (the contact plate 3b and the contact part 41s) from the displacement information of the closing element 41 which is displayed on the display device 5 during the operation of the mixer. The operator can also know the time for replacing the wear element, since he / she can confirm the disPetition status 870190102602, from 10/11/2019, pg. 31/56 spend for the contact parts during the operation of the mixer. The operator can also prevent the deformation of an edge part that forms the material discharge opening 2h from the frame 2, the deformation being caused by the continuous use of the wear elements beyond the application limit, by monitoring the wear state of the contact parts.

(7) The monitoring method of the internal batch mixer, according to this modality, also includes an alarm step, in which the display device 5 which functions as an alarm device, compares a measured value through the linear sensor 43 in the closed state or the distance of the linear movement of the piston rod 41b from the hydraulic cylinder 42 in the closed state with a plurality of predetermined setpoints (setpoint A and setpoint B), and provides an alarm when the setpoint measurement reaches each setpoint.

In this structure, since the alarm is provided when the value of the linear movement distance in the closed state based on the measured value through the linear sensor 43 reaches each setting value, which is a reference value corresponding to the replacement time or limit application of the wear element, the wear state of the wear element can still be safely perceived.

According to the internal batch mixer 1 and the method of monitoring the internal batch mixer 1 thus constituted, the operator can monitor the conditions of the wear elements away from the operating site of the internal batch mixer 1 without leaving the operation. The operator can also confirm the stroke of the hydraulic cylinder 42 during the mixing operation of the internal batch mixer 1 without leaving the operating site mentioned above.

The aforementioned structure can dispense with the operation of removing the dust collection liner to confirm the wear state of the wear element, even in a case where the wear state of the wear element cannot be observed from the outside. due to a dust collection liner attached to the wear element confirmation position. In addition, the structure mentioned above can considerably improve the working environment in the stroke confirmation operation for the hydraulic cylinder 42, when the dust collection liner is fixed to the confirmation position.

The service life of the consumable part can be predicted by analyzing the logarithmic data for the measured value using the linear sensor 43. Specifically, the service life of the consumable part can be predicted by confirming the wear status of the consumable part from the logarithmic data obtained through the use of the software formed for the analysis of logarithmic data.

The measured value via linear sensor 43 can be easily stored

Petition 870190102602, of 11/10/2019, p. 32/56 as a log of the mixing machine 1, since the measured values are given from the electrical signal.

In addition, the electrical signal data of the measured value via linear sensor 43 facilitates the display of the stroke variation value of hydraulic cylinder 42 or the stroke value of hydraulic cylinder 42 in an operation monitoring display or a display of operation of a centralized control system, and recording such value as data.

In this embodiment, the contact plate 3b and the contact part 41s, which are wear elements, can be easily and safely maintained. In this mode, moreover, forgetting the opportunity to replace the consumable part (wear element) can be eliminated, since the wear state of the wear element can be easily and safely confirmed, and damage to the internal batch mixer 1 can consequently be avoided.

In this modality, since the confirmation of the wear state of the wear element is performed through the use of linear sensor 43, the scale readjustment operation after the replacement of the wear element (consumable part) is dispensed with, different from a conventional structure configured to confirm the wear state of the wear element by visually comparing a mark attached to a piston rod with the scale of a scale plate.

Second Mode

A second embodiment of the present invention will be described on the differences from the above mentioned embodiment, with reference to Figs. 5 and 6. In this second embodiment, the descriptions for the same parts of the first embodiment mentioned above are omitted by determining the same reference numbers to the same in the drawings. That is, the parts indicated by 101, 101a, 102, 102h, 102j, 102s 103, 103b, 103r, 103s, 103 v, 103w, 104, 104B, 141b, 142 and 107 in Figs. 5 and 6 correspond to the parts indicated by 1, 1a, 2, 2h, 2j, 2s, 3, 3b, 3r, 3s, 3v, 3w, 4, 4B, 41b, 42 and 7 in Figs. 1 and 2, respectively.

In the second embodiment, a tip section 103v is formed on a discharge port 103. The discharge port 103 includes a metal contact plate 103b, as shown in Figs. 5 and 6. The contact plate 103b is arranged so as to be closer to a latch stop 141s, which will be described later, in a closed state of the discharge port 103. An inclined surface 103z is formed in one part bottom of the contact plate 103b, as shown in Fig. 6. The inclined surface 103z is inclined, so that its height from the base gradually increases towards a hydraulic cylinder 142.

A locking mechanism 104 includes hydraulic cylinder 142, linear sensor 43 and a locking element 141. Hydraulic cylinder 142 falls under the concept of the linear actuator in PrePetition 870190102602, of 10/11/2019, pg. 33/56 feels invention. Hydraulic cylinder 142 includes a piston rod 141b, a piston not shown and a cylindrical body 145. The piston rod 141b is inserted into the cylindrical body

145 and the piston is disposed within the cylindrical body 145.

In an internal batch mixer 101 of the second embodiment, the hydraulic cylinder 142 is mounted on a base 104B in an intermediate support shape. The hydraulic cylinder 142 is mounted on the base 104B through a rotary axis 145s extending in a direction orthogonal to the axial direction of the piston rod 141b. Specifically, the pivot axis 145s is attached to the cylindrical body 145 and the pivot axis 145s is pivotally supported by the base 104B. That is, the hydraulic cylinder 142 can rotate about the rotary axis 145s.

The locking element 141 is an element which contacts the contact plate 103b of the discharge port 103. The locking element 141 has a body section 141 v, two flange sections 141c and a latch stop 141s. Latch stop 141s is attached to an upper part of body section 141v to contact contact plate 103b. The stop surface of the 141s latch is formed on a curved surface. Concretely, the surface of the latch stop 141s is formed, so as to constitute a part of the lateral surface of a cylinder disposed in parallel to the axial direction of the rotary axis 103s (refer to Fig. 11). The latch stop 141s is attached to the 141v body section using a screw not shown.

The body section 141v is mounted on the base 104B through a rotary axis 141d. The body section 141v can rotate around the rotary axis 141d. Concretely, the body section 141v is held between two support flanges 141j provided on the base 104B, and the rotary shaft 141d extends through the two support flanges 141j and the body section 141v. In Fig. 10, only one support flange 141j of the two support flanges 141j is shown.

The two flange sections 141c extend from the body section 141v towards the hydraulic cylinder 142. The flange sections 141c are connected to the piston rod end part of the piston 141b through a rotary shaft 141f. This allows the body section 141v and piston rod 141b to rotate relatively about the rotary axis 141f. Concretely, the piston rod end part 141b is held between the two flange parts 141c, and the rotary shaft 141f extends through the two flange parts 141c and the piston rod end part 141b. In Fig. 10, only a flange part 141c of the two flange parts 141c is shown.

In this way, the locking mechanism 104 has an articulated lever structure. That is, in the locking mechanism 104, each element is mutually fixed and connected through the use of three rotary axes (the rotary axis 145s, the rotary axis 141d and the rotary axis 141f). Axial directions of rotary axis 145s, rotary axis 141d and rotary axis 141f

Petition 870190102602, of 11/10/2019, p. 34/56 are parallel to the axial direction of the 103s rotary axis.

In this embodiment, since the hydraulic cylinder 142 is rotatable about the rotary axis 145s, the axial direction of the piston rod 141b or the reciprocal direction of the piston rod 141b is not arranged in a fixed direction, different from the first modality mentioned above. Concretely, the angle formed by the direction of the arrow E and the horizon in the state of Fig. 10 (refer to the angle θ2 in Fig. 10) are reduced, according to the abrasion between the latch stop 141s and the contact plate 103b, the direction of arrow E representing the axial direction of piston rod 141b. That is, according to the abrasion between latch stop 141s and contact plate 103b, the axial direction of piston rod 141b approaches the horizon from the state of Fig. 10.

In the internal batch mixer 101, the discharge port 103 is maintained in the closed state by operating the locking mechanism 104 with the discharge port 103 being closed. Concretely, at this moment, piston rod 141b is moved towards the discharge port 103 through the hydraulic pressure action on the piston inside the hydraulic cylinder 142 from the side of the head chamber, by means of which a force in one discharge direction towards the discharge port 3 (the direction of the arrow H in Fig. 11) is provided to the body section 141v, through which the latch stop 104s advances to the bottom side of the contact plate 103b. At this point, a force in an upward movement direction from latch stop 104s (the direction of arrow G in Fig. 11) is provided to contact plate 103b of discharge port 103. As a result, two surfaces of contact 103w of the discharge port 103 are compressed in an edge part forming a material discharge opening 102h of a housing 102.

In this embodiment, contact plate 103b and latch stop 141s are consumable parts (replacement parts).

The internal structure of the hydraulic cylinder 142, the principle of detecting the position of the magnet through the linear sensor 143 and the display on the display device 5 in this embodiment are the same as in the first embodiment mentioned above.

In addition, in the articulated lever locking mechanism described above, the force acting on the discharge port 103 from the locking element 141 is increased, according to the angle formed by the longitudinal direction of the body section 141v or a direction connecting the rotary axis 141d to latch stop 141s, and the normal at the point of contact between latch stop 141s and contact plate 103b (angle θ1 in Fig. 1) approaches 180 °. In this case, the contact part of the housing 102 with the discharge port 103 or the narrow part on the edge that forms the material discharge opening 102h of the housing 102 (the section K delimited by the dashed line in Fig. 10) is seriously deformed . In the internal batch mixer 101, such damage to housing 102 can be prevented by monitoring the wear state of contact plate 103b and latch stop 141s

Petition 870190102602, of 11/10/2019, p. 35/56 that are wearing parts.

In this embodiment, piston rod 141b of hydraulic cylinder 142, which is a linear actuator, is provided as a separate element from body section 141v (locking element 141), different from the first embodiment.

Other Modalities

The embodiment of the present invention, in which the closing element of the closing mechanism contacts the door, is not limited to the first and second embodiments. For example, consumable parts (replacement parts) do not have to be supplied in the contact area between the discharge port and the closing element. Concretely, the contact plate 3b, 103b provided in the discharge port 3, 103 can be removed, and the closing element can directly contact the body section of the discharge port. The latch stop 141s provided on the closure element can be removed, and the discharge port can directly contact the body section of the closure element. In such a case, the integral discharge port and the integral closing element are replacement parts.

Although the contact part 41s is integrally formed with the piston rod body in the locking element 41 of the first embodiment, the contact part 41s can be composed of a different element separate from the piston rod body. In this case, the contact part 41s and the piston rod body are mutually fixed by means of adhesive or screwing. The contact part 41s is a closing element in this case, and the closing element is a different element than a linear actuator. In this case, the 41s contact part is a replacement part.

In the vicinity of the mixing device, a personal computer can be arranged instead of the control panel. In this case, a personal computer display corresponds to the display device, and a hard drive in the personal computer's body unit corresponds to the storage device. In this case, moreover, the central processing unit 5s of the display device mentioned above 5 corresponds to a CPU inside the personal computer. The display device, the storage device or the alarm device may be in a remote position away from the mixing device.

In batch internal mixer of the present invention, for example, a locking mechanism of a type in which a slider is provided between the closing member and the discharge port, as disclosed in Patent Japanese Application Open to Public No. 9 -220456, can also be applied. The sliding element is an intermediate element that slides along the inclination direction of the inclined surfaces formed on the closing element and the discharge port, respectively.

Third Mode

A third embodiment of the present invention will be described with reference to Figs.

Petition 870190102602, of 11/10/2019, p. 36/56 to 15.

Internal Batch Mixer Structure

First, the structure of the internal batch mixer 1, according to a third embodiment of the present invention, will be described. The internal batch mixer 1 includes a mixing device 1a (refer to Fig. 15) for mixing material and an indicator 27 (refer to Fig. 13) that displays displacement information for a side fastening seal element 10 and an alarm, which will be described later.

The mixing device 1a includes a housing 3, a pair of mixing rotors 2, 2, a rotor shaft 7 (referring to Fig. 13) and a dust barrier device 50.

The housing 3 is formed in a hollow form and stores the pair of mixing rotors 2, 2, so that it can be rotated around the respective axes. The housing 3 includes a medium flow channel (not shown) for cooling or heating a mixed product through the housing 3. The internal surface of the housing 3 is formed, so that a vertical section of the housing shows a cocoon-like shape. An end plate 8 is joined to an end surface of the housing 3 in the axial direction of the mixing rotor 2, as shown in Fig. 13, by means of which a chamber 4 composed of a side pair of mixing chambers 4a, 4b it is formed inside the housing 3.

An inlet orifice 3a for placing mixing material, such as rubber or plastic, in the chamber 4 is formed on the upper central side of the housing 3. A floating weight 5 to drive the mixing material, which is placed in the inlet orifice 3a, in chamber 4 it is provided over the inlet orifice 3a, in order to be able to raise and lower. On the other hand, a discharge port 3b for discharging material that has been mixed in a desired mixed state inside the chamber 4 is formed on the lower central side of the chamber 4 in the housing 3. A discharge port 6 for opening and closing the orifice discharge port 3b is provided in a part of the housing 3 in which the discharge port 3b is formed. The floating weight 5 and the discharge port 6 constitute a part of the inner wall surface of the chamber 4, during mixing of the material inside the chamber 4, being closely fitted to the housing 3.

Dust Barrier Device

Next, the dust barrier device 50 in the internal batch mixer 1 of the third embodiment will be described. The dust barrier device 50 is a device for preventing leakage of the mixing material pushed and mixed into the chamber 4 from the mixing chamber 4a as dust from an area located in the vicinity of an end portion of the rotor. mixture 2 inside the mixing chamber 4a. As shown in Figs. 12 to 14, the dust barrier device 50 includes a side rotation sealing element 9, a side fixing sealing element 10 and a pressure force transmitting mechanism 29. The rotating sealing element 870190102602, of 11 / 10/2019, p. 37/56 side rotation 9 is fixed to an end surface 2b of the mixing rotor 2. A rotor axis 7 of the mixing rotor 2 is rotatably inserted through the side fixing sealing element 10. The force transmitting mechanism pressure switch 29 tilts the side fastening sealing element 10 towards the surface end 2b of the mixing rotor 2, so that the side fastening sealing element 10 is in pressure contact with the side turning sealing element 9.

Side Rotating Sealing Element

The mixing rotor 2 mentioned above is inserted through each of the mixing chambers 4a, 4b of the internal batch mixer 1. Both ends of each mixing rotor 2 are increased in diameter towards the end surface of the rotor 2b, so that its rotor diameter is maximized on the end surface of rotor 2b, as shown in Figs. 13 and 14. That is, the enlarged parts in diameter 2a are formed, respectively, at both ends of each mixing rotor 2. The rotor shaft 7 with a shaft diameter smaller than the rotor diameter of the enlarged part in diameter 2a is projected on the inner periphery of the rotor end surface 2b. The side rotation sealing element of the ring type 9 which can be divided into two parts is fixed to the end surface of the rotor 2b. A circular recess is formed on the end surface of the rotor 2b and the side rotation sealing element 9 is attached to this recess. The side rotation sealing element 9 is composed of a sealing element body 9a having an L-shaped section and a sliding ring-like element 9b attached to a rear end opposite the rotor end surface 2b of the element body seal 9a. The sliding element 9b is attachable to, and removable from, the sealing element body 9a. The side rotation sealing element 9 is attached to the end surface of the rotor 2b and is compressed by a ring-like collar 11 from the inner periphery towards the outer periphery. This pressure force is produced by fixing a screw 12. This allows the side rotation sealing element 9 to fully rotate with the mixing rotor 2.

Lateral Fixing Sealing Element

The side fixing sealing element 10 is a ring-type element that can be divided into two parts. The rotor shaft 7 is rotatably inserted into the side locking seal element 10. Although the side rotation seal element 9 mentioned above is rotated with the mixing rotor 2, the side locking seal element 10 does not. is rotated. The side fixing sealing element 10 consists of a ring-type sealing element body 10a and a ring-type sliding element 10b fixed to one end of it on the side of the mixing rotor 2. The sliding element 10b is fixable a, and removable from the sealing element body 10a. The sealing element body 10a of the side fixing sealing element 10 is impermeably adjusted. Petition 870190102602, from 10/11/2019, pg. 38/56 liquid to the end plate 8 through a sealing ring 14 in a position close to the mixing rotor 2, so as not to leak the mixed product or lubricating oil to the outside. In addition, a chilled water passageway 15 is formed at the rear end portion of the sealing member body 10a, so as to extend in the circumferential direction. A lubricating oil passage 17 is formed in the sealing element body 10a, so as to extend in the axial direction. A chilled water pipe 16 is connected to the chilled water passage 15. Chilled water is caused by the flow in the chilled water passage 15 through the chilled water pipe 16, through which the side fixing sealing element 10 is cooled. A lubricating oil pipe 18 is connected to the lubricating oil passage 17. When lubricating oil flows into the lubricating oil passage 17 through the lubricating oil pipe 18, this lubricating oil is supplied between the contact surfaces of the slide element 10b and the element slide 9b of the side rotation sealing element 9 through the lubricating oil passage 17.

The sliding element 9b of the side rotation sealing element 9 and the sliding element 10b of the side fastening sealing element 10 are formed, for example, of hard coating alloy. As the material applicable to the sliding element 9b and the sliding element 10b, in addition to various alloys of steel and copper, materials not impregnated with oil, such as ceramics and sintered carbon, and metals impregnated with oil, such as hard bronze, cast iron and sintered metal, can be supplied.

A process oil passage 19 is formed on the end plate 8. A process oil pipe 13 for supplying process oil is connected to the process oil passage 19. Process oil is an oil that does not cause adverse effects to the quality of the mixed product, even when captured in chamber 4. Process oil is supplied between the contact surfaces of the sliding element 9b and the sliding element 10b through the tube for process oil 13 and the passage for process oil 19. As Process oil, mineral oils from the aroma series, naphthene series and the like can be used mainly. When mixing vinyl chloride resin or the like, a synthetic plasticizer typified by DOP (dioctyl phthalate) is used as the process oil. Some mixers with low sliding speed between the contact surfaces, such as small mixers, do not need process oil. In this case, the transition to process oil 19 can be removed.

Pressure Force Transmitter Mechanism

The pressure force transmitting mechanism 29 will be described. The pressure force transmitting mechanism 29 includes a hydraulic cylinder 23, a linear sensor 26 attached to the hydraulic cylinder 23 and a fork 20 at one end to which the hydraulic cylinder 23 is attached.

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Linear Actuator

The hydraulic cylinder 23 includes a cylinder body 24 and a piston rod 25 supplied within the cylinder body 24, so as to be movable in the axial direction of the mixing rotor 2. The hydraulic cylinder 23 is a linear actuator in which the rod of piston 25 moves linearly in the axial direction of the mixing rotor 2 by supplying oil to a side head chamber 23a within the cylinder body 24 or by discharging oil from the side head chamber 23a. The linear actuator means an actuator provided with a moving part that moves linearly. The piston rod 25 falls into the concept of the moving part in the present invention. The hydraulic cylinder 23 tilts the side locking seal element 10 towards the end surface of the rotor 2b by moving the piston rod 25 towards the end surface of the rotor 2b in its axial direction. The linear actuator of the present invention is not limited to hydraulic cylinder 23. The drive source can be pressure from other liquids without being limited to hydraulic pressure. A pneumatic cylinder can also be used as the linear actuator.

A piston rod end 25 is fitted to an end of a columnar rod end guide 25a. A spring 28 is inserted into the stem end guide 25a from the other end side. The rod end guide 25a is in contact with the end plate 8 through the spring 28.

Linear Sensor

The linear sensor is a sensor for measuring the distance of movement through the linear movement of the linear actuator. The linear sensor 26 in this mode is attached to the hydraulic cylinder 23 and detects the displacement of the piston rod 25 in the axial direction of the mixing rotor 2. Specifically, the linear sensor 26 detects the stroke or position of the piston rod of the piston rod 25 of the cylinder hydraulic 23. Linear sensor 26 is attached to a head portion of hydraulic cylinder 23. Like linear sensor 26, for example, a magnetostrictive displacement sensor can be used. The magnetostrictive displacement sensor is a displacement sensor based on a magnetostrictive phenomenon by the Wiedemann effect. Concretely, the magnetostrictive displacement sensor is configured, so that an absolute position of a magnet that moves along a rod-type sensor probe without contact with the probe is precisely detected causing torsion deformation in a magnetostrictive wire inside the probe through the magnet, and measuring the propagation time of this deformation. Like the linear sensor, a wire sensor, a laser sensor or the like are also usable.

Fork

The fork 20 is a plate element for transmitting a driving force from the hydraulic cylinder 23 to the side securing element 10. The hydraulic cylinder 23 is attached to one end of the fork 20 and a fork pin 21 is attached to each one. of

Petition 870190102602, of 11/10/2019, p. 40/56 other forked ends of the fork 20. A junction point of the fork 22 is inserted in the fork fork 20 or substantially in the center in the longitudinal direction of the fork 20, whereby a fork mechanism, in which the fork 20 swings with the fork junction 22 as a support point, it is formed. The fork junction point 22 is attached to the end plate 8 and the fork 20 is supported by the fork junction point 22. The tips of the two fork pins 21 are fitted into holes formed on the end surface opposite the mixing rotor. 2 of the side securing element 10, respectively.

In this way, it is prevented that the side fixing sealing element 10 rotates through the fork pins 21 fixed, respectively, to the forked ends of the fork 20. The rotation of the side fixing sealing element 10 is safely prevented by compressing the fork pins 21 on the side securing element 10 through the fork 20 through the hydraulic cylinder 23.

Display Device

As shown in Fig. 13, indicator 27 is electrically connected to linear sensor 26 via an output cable. Indicator 27 is provided outside the mixing device 1a. Indicator 27 falls into the concept of the display device in the present invention. Indicator 27 displays displacement information of the side fixing seal element 10 in a state where the side fixing seal element 10 is in pressure contact with the side rotation seal element 9 by the pressure force transmitting mechanism 29 or in a state where the piston rod 25 of the hydraulic cylinder 23 compresses the side locking seal element 10 into the side rotation seal element 9. Indicator 27 looks for an output signal from linear sensor 26 and displays the displacement, according to the detection value through the linear sensor 26. Indicator 27 can perform remote display in a distant position from the pressure force transmitting mechanism 29. Indicator 27 is incorporated in a control panel or similar set next to the mixing device 1. A control panel operation monitoring screen fitted next to the mixing device 1a or an operating terminal screen of a centralized control system adjusted to a distant location from the mixing device 1a can be used as the display device to display the displacement information, according to the detection value through the linear sensor 26. In Fig. 13, which is a sectional view taken along XIII-XIII of Fig. 12, indicator 27 is not outlined as a sectional view. Fig. 13 only shows schematically that indicator 27 is wired to linear sensor 26.

The displacement information can be the position (detection value) itself of piston rod 25 at the time of compression of the side locking seal element 10 on the side rotation sealing element 9 by piston rod 25 of the hydraulic cylinder

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23, or the variation from the initial position of piston rod 25 at such a time. The displacement information can be the position or variation in the position (displacement) of the side fixing seal element 10 which is obtained by converting the detection value or variation from the initial position of the piston rod 25, according to lever ratio of the fork mechanism, or the ratio of the distance between the hydraulic cylinder 23 and the fork junction 22 to the distance between the fork junction 22 and the fork pin 21. The offset information can be displayed in indicator 27 as a numerical value or as a graph corresponding to the numerical value.

Indicator 27 functions as an alarm device and has an alarm display function. Concretely, indicator 27 compares the detection value through the linear sensor 26 with a predetermined adjustment value and displays an alarm when the detection value through the linear sensor 26 reaches the adjustment value.

Dust Barrier

Then, the action of the dust barrier device 50 will be described through the action of the internal batch mixer 1. The hydraulic cylinder 23 of the pressure force transmitting mechanism 29 tilts the side fastening seal element 10 towards the surface of end 2b of the mixing rotor 2 through the fork 20 and the fork pin 21, by means of which the sliding element 10b of the side securing element 10 is compressed into the sliding element 9b of the side rotation sealing element 9 in one predetermined pressure force. At this time, the spring 28 at one end of which contacts the end plate 8 works to cause the fork 20 to follow a movement in the axial direction of the mixing rotor 2, so as to maintain the pressure contact state of the sliding element 10b of the side securing element 10 on the sliding element 9b.

The function of the internal batch mixer 1, according to this modality, will be described.

First, the upper surface of the chamber 4 is opened by separating the floating weight 5 from the housing 3 with the discharge port 6 being in close contact with the housing 3, as shown in Fig. 15. After the mixing material , such as rubber, plastic or filler, is loaded into the chamber 4 through this opening, the floating weight 5 is closely adjusted to the housing 3 to propel the mixing material into the chamber 4. The mixing material inside the chamber 4 it is cooled through the housing 3, before and after this impulse, through the circulation of cooled water through the cooling tube attached to the outer wall surface of the housing 3, and the side fixing sealing element 10 is also cooled through the circulation of chilled water through the chilled water passage 15, as shown in Fig. 14.

Then, mixing of the mixing material is initiated by rotating the ro

Petition 870190102602, of 11/10/2019, p. 42/56 mixing tors 2, 2 in mutually inverse directions and thereby shearing and dispersing the mixing material inside the chamber 4, so that a mixed product in a desired mixed state can be obtained. Since the side rotation sealing element 9 is rotated with the mixing rotor 2 under the rotation of each mixing rotor 2, the sliding element 9b of the side rotation sealing element 9 and the sliding element 10b of the side sealing element. lateral fixation 10 slide together at a speed, according to the rotation speed of the mixing rotor 2. A frictional force proportional to the pressure force by the hydraulic cylinder 23 is generated between the contact surfaces of both sliding elements 9b, 10b and, as a result, both sliding elements 9b, 10b are worn with heating. When the mixed product is such that there is no problem with quality, even when the lubricating oil is lightly mixed with it, a small amount of lubricating oil is supplied between the contact surfaces of both sliding elements 9b, 10b through the passage for lubricating oil 17 to thereby reduce the coefficient of friction between the contact surfaces of both sliding elements 9b, 10b and to cool both sliding elements 9b, 10b. As a result, heating and wear of both sliding elements 9b, 10b are prevented.

When the mixing rotor 2 is rotated with both sliding elements 9b, 10b being in pressure contact with each other, as described above, the mixed product is compressed on the internal surface of the housing 3 or on the end plate 8 constituting the chamber 4 ( mixing chamber 4a), whereby a part of the mixed product enters a space between the enlarged diameter portion 2a of the mixing rotor 2 and the end plate 8 shown in Fig. 14. On this occasion, the sliding element 10b of the side sealing element 10 is in pressure contact with the sliding element 9b of the side rotation sealing element 9 at a predetermined pressure force, and the sealing element body 10a of the side fixing sealing element 10 is closely fitted to the end plate 8 through the sealing ring 14. Since the space between the increased diameter diameter portion 2a of the mixing rotor 2 and the end plate 8 are is in a sealed state by the pressure contact between both sliding elements 9b, 10b and the presence of the sealing ring 14, the mixed product does not leak, even if it penetrates an area inside the chamber 4 from the sealed part of the space . As a result, the mixed product is mixed with satisfactory quality inside the chamber 4.

In this way, the dust barrier to prevent dust leakage from the mixed product consists of the contact surface of the side rotation sealing element 9 rotating integrally with the mixing rotor 2 and the contact surface of the side fastening sealing element 10 compressed on this contact surface with a force of

Petition 870190102602, of 11/10/2019, p. 43/56 predetermined pressure, and also by the sealing ring 14.

Monitoring Method for the Position of the Sealing Element

Then, the monitoring method for the position of the sealing element will be described.

Detection Stage

Although the mixing rotor 2 is rotating with both sliding elements 9b, 10b being in pressure contact with each other, a stroke (piston position) of the piston rod 25 of the hydraulic cylinder 32 compressing the side fastening seal element 10 in the end surface 2b of the mixing rotor 2 is detected via the linear sensor 26 attached to the head of the hydraulic cylinder 23.

Exhibition Stage

The indicator 27 then displays displacement information of the side fixing seal element 10, according to a detection value via linear sensor 26. The displacement information of the side fixing seal element 10, according to the detection value can be, as described above, the position of the piston rod 25 of the hydraulic cylinder 23 in the moment of compressing the lateral fixing sealing element 10 (detection value), the variation from the initial position of the piston rod 25 or the position or variation in the position of the side fastening seal element 10 obtained by converting the above mentioned detection or variation value from the initial position of piston rod 25, according to the lever ratio of the fork mechanism . The lever ratio of the fork mechanism is the ratio of the distance between the hydraulic cylinder 23 and the fork junction 22 to the distance between the fork junction 22 and the fork pin 21. Indicator 27 displays the information displacement, whereby the operator can confirm a driven amount of the side fixing sealing element 10 to the end surface 2b of the mixing rotor 2 from its initial position, which corresponds only to the abrasion loss of both elements slides 9b, 10b. The operator can perceive a total chain thickness of the sliding elements 9b, 10b from the driven quantity of the side fastening sealing element 10. When the material of the sliding element 9b is more resistant to abrasion than the sliding element 10b, the thickness of the sliding element 10b is mainly perceived from the driven amount of the side fixing sealing element 10. On the other hand, when the material of the sliding element 10b is more resistant to abrasion than the sliding element 9b, the thickness of the sliding element 9b it is mainly perceived from the driven amount of the side fixing sealing element 10. In general, the sliding element 9b is composed of an abrasion resistant element and the sliding element 10b is composed of an abrasion-susceptible element.

Alarm Activation Step

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Then, indicator 27 compares the detection value from the linear sensor 26 with an adjustment value that is preliminarily stored in an indicator 27 storage unit and provides an alarm (warning) when the detection value reaches the value of adjustment. At this time, indicator 27 displays the alarm. The alarm emission is not limited to the way in which indicator 27 displays the alarm. For example, an alarm device built into indicator 27 and configured to emit an alarm by a method, except the display, can provide an alarm, or an alarm device provided separately from indicator 27 can provide an alarm by issuing a warning. The alarm can be, in addition to the alarm display to be displayed on indicator 27 or the like, an audible alarm emitted from an alarm system. The alarm display can be obtained through the warning display characters, lighting an alarm lamp, changing the shape of the displacement information display of the side fixing sealing element 10 shown in indicator 27, changing the background color of the screen display or the like. The audible alarm can be emitted through the use of an oscillating circuit that generates a siren sound, bell sound or the like. In addition, a shape such that a control device that has read an audible alarm output waveform stored in a memory causes a speaker to generate an audible alarm, according to the output waveform , can be adopted.

As described above, indicator 27 displays displacement information, according to the detection value from the linear sensor 26, at the moment of compression of the side fixing seal element 10 by the hydraulic cylinder 23, through which the operator can easily perceive the displacement of the side fixing sealing element 10 during the operation of the mixer 1. In other words, the indicator 27 facilitates the perception of the level of wear of the sliding element 10b or of the sliding element 9b which is a wear element. The operator can perceive the wear level of the wear element without leaving the workplace. The operator can also know the replacement time (service life) of the wear element before the mixing material inside the chamber 4 begins to leak out through a space in the vicinity of the end of the mixing rotor 2, since he / she can check the wear element wear level during the operation of the internal batch mixer 1. The operator can prevent continuous wear element wear beyond its application limit by monitoring the wear element wear level wear through indicator 27. As a result, the rupture of peripheral installations resulting from the leakage of the mixing material, for example, rupture of the peripheral piping or a temperature sensor, can be prevented.

In addition, an arithmetic device (not shown) with software to predict the wear element's useful life based on logarithmic data for the value of

Petition 870190102602, of 11/10/2019, p. 45/56 detection via linear sensor 26 showing abrasion data of the wear element is incorporated into the control panel set next to the mixing device 1a, the operating terminal of the centralized control system or the like, and an output signal from of the linear sensor 26 is computed or analyzed by this arithmetic device, whereby the service life of the sliding element 10b or the sliding element 9b, which is a wear element, can also be predicted.

If the adjustment value to be stored in indicator 27 is set to a value corresponding to the replacement time or application limit of sliding element 10b or sliding element 9b, indicator 27 provides an alarm, according to the replacement time or limit of application of the sliding element 10b or the sliding element 9b which is a wear element. The operator can still safely perceive the wear level of the wear element through this alarm.

The alarm device mentioned above can preferably store at least two stages of the alarm setpoint. For example, the first stage alarm setpoint is used to announce that the wear element has reached the replacement time before the application limit, and the second stage alarm setpoint is used to announce that the wear has reached the application limit. Accordingly, in addition to the alarm provided for the purpose of protecting the machine when the wear element reaches the application limit, a preliminary alarm can be provided to announce that the wear element has reached the replacement time to ensure a replacement period. preparation necessary to manufacture or wear the wear element, plan to replace the wear element or the like.

Indicator 27 preferably functions as the alarm device and has the function of displaying the alarms mentioned above. Indicator 27, which displays displacement information for the side fixing seal element 10, displays the alarms mentioned above, through which the operator can perceive the wear level of the wear element and determine whether the wear is at the time level replacement or application limit of the wear element only by monitoring indicator 27.

In addition, indicator 27 is preferably configured to perform the alarm display by modifying the displacement information display method of the side fixing sealing element 10. The alarm display by modifying the displacement information display method of the side fixing sealing element 10 is obtained, for example, by means of a light signal, color reversal or color change of the displacement information of the side fixing sealing element 10 shown in indicator 27 (numeric display, graphic display) or a combination of them. The color change is a global color change or partial color change of the indication in indicator 27. Such a change in the method of displaying displacement information by indicator 27 allows

Petition 870190102602, of 11/10/2019, p. 46/56 that the operator easily and simultaneously perceives the wear level of the wear element and the determination if the wear is at the level of the replacement time or application limit without changing the direction of the eyes.

Although the third embodiment related to the structure in which the side fastening seal element is compressed in contact with the side rotation sealing element of the present invention has been described above, the present invention is not limited to the third modality mentioned above, and can be carried out with various modifications without departing from the scope of the claims.

Summary of Modalities

The modalities mentioned above can be summarized, as follows.

The internal batch mixer, according to the modalities mentioned above, includes: a mixing device for mixing material; and a display device provided outside the mixing device, wherein the mixing device includes: a housing in which the material is mixed and which has a material discharge opening formed to discharge the mixed material; a door that opens and closes the material discharge opening by rotating around an axis and blocks the material discharge opening when it is in a closed state; and a closing mechanism that maintains, during mixing of the material inside the housing, the door in a closed state, the closed state being a state in which the closing mechanism compresses the door to the housing, so that the door locks the door. material discharge opening and cannot be opened, and which releases the closed state, by discharging the mixed material inside the housing out of the housing, the closing mechanism includes: a closing element provided to be contacted with the door; a linear actuator that has a linearly moving part and provides power to the locking element to direct the locking element beside the door by moving the moving part towards the door; and a linear sensor that measures the distance of the linear movement of the moving part by the linear actuator, and the display device displays displacement information of the closing element based on the distance of the linear movement of the moving part measured through the linear sensor.

In this structure, the display device supplied outside the mixing device can display, based on a measured value via the linear sensor, displacement information of the closing element, or information about the travel of the moving part of the linear actuator. Therefore, the operator can easily perceive information about the state of wear in a contact area between the door and the closing element from the displacement information of the closing element displayed on the display device during the operation of the mixer. The operator can know the time of replacement of the wear element, since he / she can perceive the state of wear in the contact area during the operation of the mixer. The operator can still monitor the wear status in the area

Petition 870190102602, of 11/10/2019, p. 47/56 contact by monitoring the travel information displayed on the display device. As a result, deformation of the edge part that forms the material discharge opening from a part close to the inner surface of the housing, such as deformation resulting from the continuous use of a wear element beyond its application limit, can be prevented.

In this embodiment, the internal batch mixer is used to mix material, such as rubber or plastic. The housing is a housing element having a mixing chamber formed inside it. In the mixing chamber inside the housing, the material is mixed using mixing rotors. The door is a hinged door, and opens and closes in an arc around a rotating axis.

The linear actuator is a drive device that converts input energy into linear motion, for example, such as a hydraulic cylinder, a pneumatic cylinder or a ball screw mechanism. The linear movement distance of the moving part of the linear actuator means a moving distance of the moving part of the linear actuator along a straight line. For example, when the linear actuator is the hydraulic cylinder, the moving part is a piston and the distance of the linear movement corresponds to the distance of movement of the piston.

The closing mechanism can be of the sliding type, in which the closing element moves linearly, or of the hinged lever type, in which the closing element moves in a rotating manner. That is, the direction of movement of the closing element through the power supply from the linear actuator can be a direction along the linear movement of the moving part of the linear actuator or any other direction.

The closing element of the closing mechanism can be directly attached to the moving part of the linear actuator. In this case, power is delivered directly from the moving part of the linear actuator to the closing element. A different element (connecting element) can be provided between the closing element of the closing mechanism and the moving part of the linear actuator to indirectly supply the power of the linear actuator to the closing element through the different element. The movable part of the linear actuator and the closing element can be formed as an integrated unit.

The linear sensor is a sensor for measuring the distance of the linear movement of the moving part of the linear actuator. Like this linear sensor, for example, a linear encoder, a linear potentiometer or the like are applied. The sensor system that can be used for this linear sensor is a magnetostrictive system, a laser system, a wire system or the like. The linear sensor can be configured to perform digital output or analog output.

The information of displacement of the closing element is the information about the position or variation in the position of the closing element in the closing state, which directly or indirectly 870190102602, of 11/10/2019, p. 48/56 shows the course of the linear actuator. The operator can perceive the state of wear in the contact area between the door and the closing element from this travel information.

The displacement information of the closure element to be displayed on the display device can be a value (measured value) as is the distance of the linear movement of the moving part of the linear actuator, or a value of the angle of rotation of the closure element obtained by converting the distance value of the linear movement of the moving part of the linear actuator when the closing mechanism is of the articulated lever type. The displacement information of the closing element can be a value showing the position relative to the initial position, for example, a value of the variation in the stroke in relation to the initial stroke of the linear actuator, or a value showing an absolute position variation, for example , a value of the variation in the measured value of the linear actuator stroke.

The display device can display, for example, the value of the distance of the linear movement of the moving part of the linear actuator point to point on a real-time basis, or it can display the value of the angle of rotation of the closing element obtained through the conversion. the distance of the linear movement of the movable part of the linear actuator in the case of the clamping lever type closing mechanism.

The display device, which can perform remote display at a location far from the closing mechanism, can be an operation display monitor from a control panel set in the vicinity of the mixing device, or an operation display (terminal screen) operation) of a centralized control system set at a location away from the mixing device.

For example, the display device can directly display a numerical value of the displacement information of the closure element or it can graphically display the numerical value of the displacement information of the closure element. The graphical display can be a bar graph, pie chart, line graph or the like. As the display device, a liquid crystal display, a cathode ray tube, a plasma display, an LED or the like can be used.

At the door, a consumable part, such as a contact plate, which is a replacement part, can be provided in a contact part with the locking element, or such consumable part can be removed. In the closing element, a consumable part, such as a latch stop, which is a replacement part, can be provided in a contact part with the door, or such consumable part can be removed.

The aforementioned internal batch mixer may also include a storage device that stores an adjustment value related to the displacement information of the closure element; and an alarm device that compares the displacement information of the closing element in the closed state with the adjustment value, and provides a

Petition 870190102602, of 11/10/2019, p. 49/56 alarm when the displacement information of the closing element reaches the setting value.

In this structure, when the displacement information value of the closing element based on the measured value via the linear sensor reaches an optional adjustment value stored in the storage device, the alarm is provided from the alarm device. Therefore, when the adjustment value mentioned above is a reference value corresponding to the replacement time or application limit of a wear element, the alarm device provides the alarm when the wear state of the wear element reaches the replacement time. , application limit or the like, and the operator can also safely perceive the wear state of the wear element through this alarm.

The alarm can be an alarm display to be displayed on the display device or the like, or an audible alarm to be provided from an alarm system. The alarm display can be achieved by display warning characters, by turning on an alarm lamp, by modifying the display mode of the displacement information of the closing element displayed on the display device, by modifying the color display screen background or the like. The audible alarm can be emitted through the use of an oscillating circuit that generates siren sound, bell sound, etc., or it can be emitted through the use of a loudspeaker by reading an alarm output waveform. audible recorded in a memory.

Like the storage device, a RAM (random access memory), a hard disk drive or the like, which is incorporated into the control panel mentioned above or the centralized management system mentioned above, can be used.

The alarm device and the display device can be composed of different devices or the same device.

In this structure, the "displacement information of the closing element" to be compared with the adjustment value can be the same information as the information (display value) displayed on the display device, or information different from the display value.

In the above-mentioned internal batch mixer provided with the storage device, the storage device is preferably configured, so that at least two stages of the setpoint can be stored for a linear sensor.

In this structure, the alarm device stores two or more stages of adjustment values as the reference value corresponding to the measured value of the distance of the linear movement of the moving part of the linear actuator that is measured through the linear sensor in the closed state, by means of from which the alarm device can provide gradual alarms for the wear state of the wear element. This structure allows device 870190102602, of 10/11/2019, p. 50/56 vo alarm, for example, provide a preliminary alarm for the wear element replacement time and an alarm announcing the wear limit (application limit) of the wear element. In this case, setting a preparation period for consumable parts, work planning or the like can be effectively carried out based on this preliminary alarm, while the use of the wear element beyond its application limit can be prevented based on the alarm which announces the wear limit to protect the machine parts.

In the internal batch mixer mentioned above, the display device can function as the alarm device and have a function to display the above alarm.

According to this structure, since the alarms are displayed on the display device that displays the displacement information of the closing element, the operator can visually recognize the alarms. Therefore, the operator can easily perceive the wear state of the wear element and determine whether the wear state is at the level of the replacement time or application limit of the wear element.

In this case, the display device can be configured in order to display the alarm by modifying a display mode of the displacement information of the closing element.

Since the operator can visually recognize the displacement information of the closing element and the alarm at the same time in this structure, the perception of the wear state of the wear element and the determination whether the wear state is at the level of the replacement time or limit of application of the wear element can be easily and simultaneously performed.

The "change in the display of the closing element displacement information" can be a "light signal", "reversal or change of the display color, such as character color or background color", "global or partial change of color in the display ”or similar to the displacement information of the closing element made up of a numerical or graphic value on the display device screen.

Otherwise, the internal batch mixer, according to the modalities mentioned above, includes a mixing device for mixing material; and a display device provided outside the mixing device, wherein the mixing device includes: a housing having a mixing chamber inside it; a rotor inserted in the mixing chamber; a rotor shaft provided to project from an end surface of the rotor which is an end surface in the axial direction of the rotor; and a dust barrier device to prevent material leakage inside the mixing chamber to the outside, and the dust barrier device includes: a side rotation sealing element fixed to the end surface of the rotor to be fully rotated with the rotor; a lateral ring-type sealing element through which the shaft

Petition 870190102602, of 11/10/2019, p. 51/56 of the rotor is inserted in a rotational manner; and a pressure-force transmitting mechanism that tilts the side fixing sealing element towards the rotor end surface, so that the side fixing sealing element is in pressure contact with the side rotation sealing element, and the pressure force transmitting mechanism includes: a linear actuator that has a movable part provided to be movable in the axial direction of the rotor, and tilts the side fastening sealing element towards the end surface of the rotor by moving the part movable towards the end surface of the rotor; and a linear sensor attached to the linear actuator to detect displacement of the moving part in the axial direction of the rotor, and the display device displays displacement information of the lateral fastening seal element based on a detection value through the linear sensor in a state where the side fastening sealing element is in pressure contact with the lateral rotation sealing element by the pressure force transmitting mechanism.

According to this structure, the display device supplied distant and outside the mixing device can display displacement information of the side fixing sealing element, according to a detection value through the linear sensor, in a state where the element lateral fixing sealing device is in pressure contact with the lateral rotation sealing element by the pressure force transmitting mechanism, for example, linear actuator stroke information. Therefore, the operator can easily perceive a displacement of the side fixing seal element or a wear state of the wear element during the operation of the mixer. Since the operator can perceive the wear state of the wear element during the operation of the internal batch mixer, he / she can know the replacement time or service life of the wear element for the sealing elements before the mixing material inside the mixing chamber start to leak out through a space in the vicinity of the end surface of the rotor. In addition, the continued use of a wear element beyond its application limit can be prevented by monitoring the wear state of the wear element on the display device. As a result, the rupture of peripheral installations resulting from the leakage of the mixing material, for example, the rupture of the peripheral piping or of a temperature sensor, can be prevented.

The internal batch mixer mentioned above provided with the sealing elements preferably includes an alarm device that compares the detection value with a predetermined setpoint, and provides an alarm when the detection value reaches the setpoint.

According to this structure, a value corresponding to the detection value at the moment the wear element reaches the replacement time or application limit 870190102602, from 10/11/2019, pg. 52/56 cation is taken as the adjustment value, by means of which the alarm device can provide the alarm, according to the replacement time or application limit of the wear element. In this way, the operator can still safely perceive the wear state of the wear element through this alarm.

In this case, the alarm device is preferably constituted, so that at least two stages of the setpoint can be stored.

According to this structure, in addition to the alarm provided to announce that the wear element has reached the application limit for machine protection, a preliminary alarm can be provided to announce that the wear element has reached the replacement time before the application. As a result, fixing a preparation period to manufacture the wear elements or the like, planning the replacement of the wear element or the like can be facilitated.

In the internal batch mixer mentioned above, the display device preferably functions as the alarm device and has a function for displaying the alarm.

This structure allows the operator to easily perceive the wear level of the wear element and to determine whether the wear is at the level of the replacement time or application limit just by looking at the display device.

In this case, the display device is preferably configured to display the alarm by modifying a method of displaying the displacement information.

This structure allows the operator to easily and simultaneously perceive the wear level of the wear element and to determine whether the wear is at the level of the replacement time or application limit only by observing the display device.

Claims (4)

1. Internal batch mixer (1), comprising: a mixing device (1a) for mixing material; and a display device (5) provided outside said mixing device, wherein said mixing device (1a) includes: a carcass (2) in which the material is mixed and which has a material discharge opening (2h) formed to discharge the mixed material; a door (3) which is adapted to open and close said material discharge opening (2h) by rotating around an axis (3s) and blocking said material discharge opening (2h) when it is in a closed state; and a locking mechanism (4) which is adapted to maintain, during mixing of the material inside said housing (2), said door (3) in a closed state, the closed state being a state in which said locking mechanism closure (4) compresses said door (3) until said housing (2), so that said door (3) blocks said material discharge opening (2h) and cannot be opened, and that it is adapted for releasing the closed state when discharging the mixed material within said housing (2) out of said housing (2), said closing mechanism (4) includes: a closing element (41) provided to be contacted with said door (3); a linear actuator (42) which has a linearly movable part (41b) and is adapted to supply power to said closing element (41) to direct said closing element (41) to said side of the door (3) through movement said moving part (41b) towards said door (3); CHARACTERIZED by a linear sensor (43) which is adapted to measure the distance of the linear movement of said moving part (41b) through said linear actuator (42), and said display device (5) being adapted to display displacement information of said closing element (41) based on the distance of the linear movement of said moving part (41b) measured through said linear sensor (43), wherein the internal batch mixer (1) still includes: a storage device (6) which is adapted to store an adjustment value related to the displacement information of said closing element (41); and an alarm device which is adapted to compare the displacement information of said closing element (41) in the closed state with the adjustment value and providing an alarm when the displacement information of said closing element (41) reaches the value adjustment. 2. Internal batch mixer according to claim 1, CHARACTERIZED by the fact that said storage device (6) is configured, so that at least two stages of the setpoint can be stored for the Petition 870190102602, of 11/10/2019, p. 54/56 said linear sensor (43). 3. Internal batch mixer according to claim 1, CHARACTERIZED by the fact that said display device (6) functions like said alarm device and has a function to display the alarm. Internal batch mixer (1) according to claim 3, CHARACTERIZED by the fact that said display device (6) is configured in order to perform the alarm display by modifying a display mode of the displacement information of said closing element (41).